/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:32:25,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:32:25,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:32:25,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:32:25,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:32:25,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:32:25,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:32:25,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:32:25,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:32:25,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:32:25,706 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:32:25,707 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:32:25,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:32:25,709 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:32:25,711 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:32:25,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:32:25,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:32:25,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:32:25,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:32:25,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:32:25,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:32:25,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:32:25,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:32:25,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:32:25,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:32:25,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:32:25,745 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:32:25,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:32:25,747 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 11:32:25,786 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:32:25,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:32:25,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:32:25,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:32:25,787 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:32:25,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:32:25,787 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:32:25,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:32:25,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:32:25,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:32:25,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:32:25,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:32:25,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:32:25,789 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:32:25,789 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:32:25,789 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:32:25,789 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:32:25,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:32:25,790 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:32:25,790 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:32:25,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:32:25,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:32:25,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:32:25,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:32:25,794 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:32:25,794 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:32:25,794 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:25,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:32:25,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:32:25,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:32:26,115 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:32:26,128 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:32:26,131 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:32:26,132 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:32:26,133 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:32:26,134 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-07-20 11:32:26,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57792cc2d/b0c1976a888142f1a566101b0b963b18/FLAG7f22d14d9 [2020-07-20 11:32:26,784 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:32:26,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label07.c [2020-07-20 11:32:26,809 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57792cc2d/b0c1976a888142f1a566101b0b963b18/FLAG7f22d14d9 [2020-07-20 11:32:27,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/57792cc2d/b0c1976a888142f1a566101b0b963b18 [2020-07-20 11:32:27,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:32:27,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:32:27,061 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:32:27,061 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:32:27,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:32:27,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:32:27" (1/1) ... [2020-07-20 11:32:27,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f84d54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27, skipping insertion in model container [2020-07-20 11:32:27,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:32:27" (1/1) ... [2020-07-20 11:32:27,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:32:27,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:32:27,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:32:27,642 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:32:27,755 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:32:27,772 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:32:27,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27 WrapperNode [2020-07-20 11:32:27,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:32:27,774 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:32:27,774 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:32:27,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:32:27,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (1/1) ... [2020-07-20 11:32:27,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (1/1) ... [2020-07-20 11:32:27,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (1/1) ... [2020-07-20 11:32:27,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (1/1) ... [2020-07-20 11:32:27,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (1/1) ... [2020-07-20 11:32:27,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (1/1) ... [2020-07-20 11:32:27,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (1/1) ... [2020-07-20 11:32:27,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:32:27,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:32:27,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:32:27,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:32:27,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:32:27,960 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:32:27,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:32:27,961 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 11:32:27,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:32:27,961 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 11:32:27,961 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:32:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:32:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 11:32:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:32:27,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:32:27,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:32:29,088 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:32:29,089 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 11:32:29,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:32:29 BoogieIcfgContainer [2020-07-20 11:32:29,100 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:32:29,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:32:29,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:32:29,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:32:29,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:32:27" (1/3) ... [2020-07-20 11:32:29,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119c0b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:32:29, skipping insertion in model container [2020-07-20 11:32:29,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:27" (2/3) ... [2020-07-20 11:32:29,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@119c0b03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:32:29, skipping insertion in model container [2020-07-20 11:32:29,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:32:29" (3/3) ... [2020-07-20 11:32:29,114 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label07.c [2020-07-20 11:32:29,127 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:32:29,141 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:32:29,155 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:32:29,189 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:32:29,190 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:32:29,190 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:32:29,190 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:32:29,191 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:32:29,191 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:32:29,191 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:32:29,191 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:32:29,218 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-20 11:32:29,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-07-20 11:32:29,240 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:29,241 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:29,242 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:29,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:29,248 INFO L82 PathProgramCache]: Analyzing trace with hash -897711290, now seen corresponding path program 1 times [2020-07-20 11:32:29,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:29,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193554790] [2020-07-20 11:32:29,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:29,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:29,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:32:29,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:29,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:29,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:32:29,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193554790] [2020-07-20 11:32:29,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:32:29,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:32:29,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146635475] [2020-07-20 11:32:29,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:32:29,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:29,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:32:29,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:32:29,574 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-20 11:32:30,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:30,540 INFO L93 Difference]: Finished difference Result 572 states and 963 transitions. [2020-07-20 11:32:30,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:32:30,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 110 [2020-07-20 11:32:30,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:30,559 INFO L225 Difference]: With dead ends: 572 [2020-07-20 11:32:30,560 INFO L226 Difference]: Without dead ends: 278 [2020-07-20 11:32:30,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:32:30,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-20 11:32:30,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-20 11:32:30,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-20 11:32:30,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2020-07-20 11:32:30,638 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 110 [2020-07-20 11:32:30,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:30,639 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2020-07-20 11:32:30,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:32:30,640 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2020-07-20 11:32:30,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-07-20 11:32:30,644 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:30,644 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:30,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:30,859 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:30,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:30,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1715018595, now seen corresponding path program 1 times [2020-07-20 11:32:30,861 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:30,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315873581] [2020-07-20 11:32:30,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:30,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:32:30,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:31,016 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:31,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:32:31,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315873581] [2020-07-20 11:32:31,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:32:31,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:32:31,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344678108] [2020-07-20 11:32:31,019 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:32:31,020 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:31,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:32:31,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:32:31,020 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 5 states. [2020-07-20 11:32:31,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:31,845 INFO L93 Difference]: Finished difference Result 842 states and 1218 transitions. [2020-07-20 11:32:31,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:32:31,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-07-20 11:32:31,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:31,853 INFO L225 Difference]: With dead ends: 842 [2020-07-20 11:32:31,854 INFO L226 Difference]: Without dead ends: 570 [2020-07-20 11:32:31,856 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:32:31,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-07-20 11:32:31,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 556. [2020-07-20 11:32:31,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-07-20 11:32:31,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 784 transitions. [2020-07-20 11:32:31,897 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 784 transitions. Word has length 120 [2020-07-20 11:32:31,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:31,898 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 784 transitions. [2020-07-20 11:32:31,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:32:31,898 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 784 transitions. [2020-07-20 11:32:31,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-07-20 11:32:31,902 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:31,903 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:32,115 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:32,117 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:32,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:32,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1922557334, now seen corresponding path program 1 times [2020-07-20 11:32:32,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:32,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342473960] [2020-07-20 11:32:32,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:32,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:32:32,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:32,319 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:32,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:32:32,423 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:32,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342473960] [2020-07-20 11:32:32,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:32:32,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-20 11:32:32,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673486704] [2020-07-20 11:32:32,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 11:32:32,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:32,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 11:32:32,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:32:32,427 INFO L87 Difference]: Start difference. First operand 556 states and 784 transitions. Second operand 8 states. [2020-07-20 11:32:34,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:34,611 INFO L93 Difference]: Finished difference Result 2270 states and 3383 transitions. [2020-07-20 11:32:34,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 11:32:34,619 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-07-20 11:32:34,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:34,642 INFO L225 Difference]: With dead ends: 2270 [2020-07-20 11:32:34,642 INFO L226 Difference]: Without dead ends: 1720 [2020-07-20 11:32:34,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-20 11:32:34,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2020-07-20 11:32:34,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1525. [2020-07-20 11:32:34,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2020-07-20 11:32:34,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 1994 transitions. [2020-07-20 11:32:34,741 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 1994 transitions. Word has length 140 [2020-07-20 11:32:34,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:34,741 INFO L479 AbstractCegarLoop]: Abstraction has 1525 states and 1994 transitions. [2020-07-20 11:32:34,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 11:32:34,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 1994 transitions. [2020-07-20 11:32:34,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-07-20 11:32:34,749 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:34,749 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:34,963 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:34,964 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:34,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:34,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1875176562, now seen corresponding path program 1 times [2020-07-20 11:32:34,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:34,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663500197] [2020-07-20 11:32:34,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:35,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:32:35,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 11:32:35,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:32:35,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663500197] [2020-07-20 11:32:35,104 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:32:35,104 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:32:35,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239394601] [2020-07-20 11:32:35,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:32:35,105 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:35,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:32:35,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:32:35,106 INFO L87 Difference]: Start difference. First operand 1525 states and 1994 transitions. Second operand 3 states. [2020-07-20 11:32:35,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:35,731 INFO L93 Difference]: Finished difference Result 4269 states and 5707 transitions. [2020-07-20 11:32:35,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:32:35,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2020-07-20 11:32:35,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:35,748 INFO L225 Difference]: With dead ends: 4269 [2020-07-20 11:32:35,749 INFO L226 Difference]: Without dead ends: 2754 [2020-07-20 11:32:35,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:32:35,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2020-07-20 11:32:35,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2214. [2020-07-20 11:32:35,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2214 states. [2020-07-20 11:32:35,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2214 states to 2214 states and 2923 transitions. [2020-07-20 11:32:35,838 INFO L78 Accepts]: Start accepts. Automaton has 2214 states and 2923 transitions. Word has length 144 [2020-07-20 11:32:35,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:35,839 INFO L479 AbstractCegarLoop]: Abstraction has 2214 states and 2923 transitions. [2020-07-20 11:32:35,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:32:35,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2214 states and 2923 transitions. [2020-07-20 11:32:35,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-07-20 11:32:35,849 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:35,849 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:36,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:36,063 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:36,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:36,063 INFO L82 PathProgramCache]: Analyzing trace with hash 775269600, now seen corresponding path program 1 times [2020-07-20 11:32:36,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:36,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1892508088] [2020-07-20 11:32:36,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:36,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:32:36,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-07-20 11:32:36,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:32:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 80 proven. 34 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-07-20 11:32:36,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1892508088] [2020-07-20 11:32:36,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:32:36,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 11:32:36,313 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002775144] [2020-07-20 11:32:36,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:32:36,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:36,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:32:36,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:32:36,315 INFO L87 Difference]: Start difference. First operand 2214 states and 2923 transitions. Second operand 7 states. [2020-07-20 11:32:38,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:38,023 INFO L93 Difference]: Finished difference Result 7054 states and 9980 transitions. [2020-07-20 11:32:38,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:32:38,024 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 185 [2020-07-20 11:32:38,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:38,067 INFO L225 Difference]: With dead ends: 7054 [2020-07-20 11:32:38,067 INFO L226 Difference]: Without dead ends: 4850 [2020-07-20 11:32:38,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 365 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:32:38,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4850 states. [2020-07-20 11:32:38,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4850 to 4035. [2020-07-20 11:32:38,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4035 states. [2020-07-20 11:32:38,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4035 states to 4035 states and 5276 transitions. [2020-07-20 11:32:38,259 INFO L78 Accepts]: Start accepts. Automaton has 4035 states and 5276 transitions. Word has length 185 [2020-07-20 11:32:38,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:38,260 INFO L479 AbstractCegarLoop]: Abstraction has 4035 states and 5276 transitions. [2020-07-20 11:32:38,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:32:38,260 INFO L276 IsEmpty]: Start isEmpty. Operand 4035 states and 5276 transitions. [2020-07-20 11:32:38,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-07-20 11:32:38,275 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:38,276 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:38,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:38,489 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:38,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:38,489 INFO L82 PathProgramCache]: Analyzing trace with hash -447113640, now seen corresponding path program 1 times [2020-07-20 11:32:38,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:38,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845667479] [2020-07-20 11:32:38,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:38,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 580 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:32:38,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-07-20 11:32:38,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:32:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 107 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-07-20 11:32:38,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845667479] [2020-07-20 11:32:38,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:32:38,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 11:32:38,824 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107676261] [2020-07-20 11:32:38,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:32:38,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:38,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:32:38,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:32:38,827 INFO L87 Difference]: Start difference. First operand 4035 states and 5276 transitions. Second operand 6 states. [2020-07-20 11:32:39,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:39,692 INFO L93 Difference]: Finished difference Result 7141 states and 9435 transitions. [2020-07-20 11:32:39,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:32:39,694 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 189 [2020-07-20 11:32:39,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:39,715 INFO L225 Difference]: With dead ends: 7141 [2020-07-20 11:32:39,716 INFO L226 Difference]: Without dead ends: 4351 [2020-07-20 11:32:39,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 374 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:32:39,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4351 states. [2020-07-20 11:32:39,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4351 to 3783. [2020-07-20 11:32:39,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3783 states. [2020-07-20 11:32:39,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3783 states to 3783 states and 4853 transitions. [2020-07-20 11:32:39,834 INFO L78 Accepts]: Start accepts. Automaton has 3783 states and 4853 transitions. Word has length 189 [2020-07-20 11:32:39,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:39,834 INFO L479 AbstractCegarLoop]: Abstraction has 3783 states and 4853 transitions. [2020-07-20 11:32:39,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:32:39,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3783 states and 4853 transitions. [2020-07-20 11:32:39,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-07-20 11:32:39,846 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:39,846 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:40,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:40,061 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:40,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:40,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1043857589, now seen corresponding path program 1 times [2020-07-20 11:32:40,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:40,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821053304] [2020-07-20 11:32:40,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:40,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:40,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 542 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:32:40,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:40,213 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 11:32:40,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:32:40,301 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 11:32:40,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821053304] [2020-07-20 11:32:40,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:32:40,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 11:32:40,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676245533] [2020-07-20 11:32:40,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:32:40,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:40,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:32:40,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:32:40,304 INFO L87 Difference]: Start difference. First operand 3783 states and 4853 transitions. Second operand 6 states. [2020-07-20 11:32:41,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:41,485 INFO L93 Difference]: Finished difference Result 11118 states and 15496 transitions. [2020-07-20 11:32:41,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:32:41,485 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 197 [2020-07-20 11:32:41,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:41,534 INFO L225 Difference]: With dead ends: 11118 [2020-07-20 11:32:41,534 INFO L226 Difference]: Without dead ends: 7345 [2020-07-20 11:32:41,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 390 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:32:41,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7345 states. [2020-07-20 11:32:41,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7345 to 6946. [2020-07-20 11:32:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6946 states. [2020-07-20 11:32:41,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6946 states to 6946 states and 8873 transitions. [2020-07-20 11:32:41,762 INFO L78 Accepts]: Start accepts. Automaton has 6946 states and 8873 transitions. Word has length 197 [2020-07-20 11:32:41,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:41,762 INFO L479 AbstractCegarLoop]: Abstraction has 6946 states and 8873 transitions. [2020-07-20 11:32:41,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:32:41,763 INFO L276 IsEmpty]: Start isEmpty. Operand 6946 states and 8873 transitions. [2020-07-20 11:32:41,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-07-20 11:32:41,790 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:41,791 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:42,003 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:42,004 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:42,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:42,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1960011780, now seen corresponding path program 1 times [2020-07-20 11:32:42,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:42,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321142649] [2020-07-20 11:32:42,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:42,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:32:42,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-07-20 11:32:42,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:32:42,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321142649] [2020-07-20 11:32:42,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:32:42,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:32:42,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598612139] [2020-07-20 11:32:42,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:32:42,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:42,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:32:42,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:32:42,186 INFO L87 Difference]: Start difference. First operand 6946 states and 8873 transitions. Second operand 3 states. [2020-07-20 11:32:42,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:42,787 INFO L93 Difference]: Finished difference Result 11982 states and 15303 transitions. [2020-07-20 11:32:42,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:32:42,788 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 199 [2020-07-20 11:32:42,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:42,789 INFO L225 Difference]: With dead ends: 11982 [2020-07-20 11:32:42,789 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:32:42,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:32:42,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:32:42,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:32:42,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:32:42,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:32:42,817 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 199 [2020-07-20 11:32:42,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:42,818 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:32:42,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:32:42,818 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:32:42,818 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:32:43,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:43,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:32:43,890 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 124 [2020-07-20 11:32:44,359 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 340 DAG size of output: 124 [2020-07-20 11:32:45,294 WARN L193 SmtUtils]: Spent 880.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 63 [2020-07-20 11:32:45,919 WARN L193 SmtUtils]: Spent 614.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 31 [2020-07-20 11:32:46,558 WARN L193 SmtUtils]: Spent 637.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 31 [2020-07-20 11:32:46,562 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:32:46,562 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a8~0 |old(~a8~0)|) (<= ~a16~0 |old(~a16~0)|) (<= ~a20~0 |old(~a20~0)|) (<= |old(~a16~0)| ~a16~0)) [2020-07-20 11:32:46,562 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:32:46,562 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-20 11:32:46,563 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-20 11:32:46,563 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,563 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,563 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,563 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,563 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,563 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,563 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-20 11:32:46,563 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-20 11:32:46,563 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-20 11:32:46,563 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-20 11:32:46,563 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-20 11:32:46,564 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-20 11:32:46,564 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-20 11:32:46,564 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-20 11:32:46,564 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-20 11:32:46,564 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-20 11:32:46,565 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,565 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,565 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,565 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,565 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,565 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,566 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-20 11:32:46,566 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-20 11:32:46,566 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-20 11:32:46,566 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-20 11:32:46,566 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-20 11:32:46,566 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-20 11:32:46,566 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-20 11:32:46,566 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-20 11:32:46,567 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-20 11:32:46,567 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-20 11:32:46,567 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-20 11:32:46,567 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 488) no Hoare annotation was computed. [2020-07-20 11:32:46,567 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-20 11:32:46,567 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-20 11:32:46,568 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-20 11:32:46,568 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-20 11:32:46,568 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,568 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,568 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,568 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,568 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,568 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-20 11:32:46,569 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-20 11:32:46,569 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-20 11:32:46,569 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-20 11:32:46,569 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-20 11:32:46,569 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-20 11:32:46,569 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-20 11:32:46,569 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-20 11:32:46,569 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-20 11:32:46,570 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,570 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,570 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,570 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,570 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,570 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-20 11:32:46,570 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-20 11:32:46,571 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-20 11:32:46,571 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-20 11:32:46,571 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-20 11:32:46,571 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-20 11:32:46,571 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-20 11:32:46,571 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-20 11:32:46,571 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-20 11:32:46,572 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-20 11:32:46,572 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-20 11:32:46,572 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-20 11:32:46,572 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-20 11:32:46,572 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,572 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,572 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,573 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,573 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,573 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-20 11:32:46,573 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-20 11:32:46,573 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-20 11:32:46,573 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-20 11:32:46,573 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-20 11:32:46,573 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-20 11:32:46,573 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-20 11:32:46,574 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-20 11:32:46,574 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-20 11:32:46,574 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,574 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,574 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,574 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,574 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,574 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,574 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-20 11:32:46,574 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,574 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-20 11:32:46,574 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-20 11:32:46,575 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-20 11:32:46,575 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-20 11:32:46,575 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-20 11:32:46,575 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-20 11:32:46,575 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-20 11:32:46,575 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-20 11:32:46,575 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-20 11:32:46,575 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-20 11:32:46,575 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-20 11:32:46,575 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-20 11:32:46,575 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-20 11:32:46,575 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,575 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,576 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,576 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,576 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,576 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-20 11:32:46,576 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-20 11:32:46,576 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-20 11:32:46,576 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-20 11:32:46,576 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-20 11:32:46,577 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-20 11:32:46,577 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-20 11:32:46,577 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-20 11:32:46,577 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,577 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,577 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,577 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,577 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,578 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-20 11:32:46,578 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-20 11:32:46,578 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-20 11:32:46,578 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-20 11:32:46,578 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-20 11:32:46,578 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-20 11:32:46,578 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-20 11:32:46,578 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-20 11:32:46,579 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-20 11:32:46,579 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-20 11:32:46,579 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse0 (not (<= 15 |old(~a8~0)|))) (.cse3 (<= ~a17~0 0)) (.cse4 (not (<= |old(~a17~0)| 0))) (.cse5 (<= ~a8~0 |old(~a8~0)|)) (.cse6 (<= ~a16~0 |old(~a16~0)|)) (.cse7 (<= ~a20~0 |old(~a20~0)|)) (.cse8 (<= |old(~a16~0)| ~a16~0)) (.cse2 (<= ~a7~0 0)) (.cse9 (not (<= |old(~a16~0)| 5))) (.cse1 (not (<= |old(~a7~0)| 0))) (.cse10 (not (<= |old(~a8~0)| 13)))) (and (or .cse0 .cse1 .cse2) (or .cse0 .cse3 .cse4) (or .cse0 (and .cse5 .cse6 .cse7 .cse8 (<= 15 ~a8~0))) (or .cse9 .cse10 (and .cse5 .cse7 (<= ~a16~0 5) (<= 5 ~a16~0)) (not (<= 5 |old(~a16~0)|))) (or (and .cse7 (or (and .cse5 .cse6 (<= ~a8~0 13) .cse8 (<= ~a16~0 4)) (and .cse5 .cse6 .cse8 .cse3))) (and (or .cse9 .cse4) (or .cse10 (not (<= |old(~a16~0)| 4))) (or .cse10 .cse4))) (or (and .cse5 .cse6 .cse7 .cse8 .cse2) (and (or .cse1 .cse9) (or .cse1 .cse10))))) [2020-07-20 11:32:46,579 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-20 11:32:46,579 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,579 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,579 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,579 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,580 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-20 11:32:46,580 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,580 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,580 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-20 11:32:46,580 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-20 11:32:46,580 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-20 11:32:46,580 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-20 11:32:46,580 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-20 11:32:46,580 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-20 11:32:46,580 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-20 11:32:46,580 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-20 11:32:46,581 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-20 11:32:46,581 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-20 11:32:46,581 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-20 11:32:46,581 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-20 11:32:46,581 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,581 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,581 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,582 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,582 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,582 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-20 11:32:46,582 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,582 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-20 11:32:46,582 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-20 11:32:46,582 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-20 11:32:46,582 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-20 11:32:46,583 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-20 11:32:46,583 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 11:32:46,583 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-20 11:32:46,583 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-20 11:32:46,583 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-20 11:32:46,583 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-20 11:32:46,583 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-20 11:32:46,583 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-20 11:32:46,583 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-20 11:32:46,583 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-20 11:32:46,583 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,583 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,584 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,584 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,584 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,584 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:46,584 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-20 11:32:46,584 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-20 11:32:46,584 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-20 11:32:46,584 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-20 11:32:46,585 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-20 11:32:46,585 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-20 11:32:46,585 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-20 11:32:46,585 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-20 11:32:46,585 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-20 11:32:46,585 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-20 11:32:46,585 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:32:46,585 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0)) [2020-07-20 11:32:46,585 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:32:46,585 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:32:46,586 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (and (<= ~a8~0 |old(~a8~0)|) (<= ~a20~0 |old(~a20~0)|) (<= ~a7~0 0) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0)) (not (<= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (not (<= 5 |old(~a16~0)|))) [2020-07-20 11:32:46,586 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-20 11:32:46,586 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 0)) (.cse1 (<= ~a16~0 5)) (.cse2 (<= ~a8~0 13)) (.cse3 (<= ~a7~0 0))) (or (and .cse0 .cse1) (not (<= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (<= 15 ~a8~0) (and .cse2 .cse0) (and .cse3 .cse1) (not (<= |old(~a16~0)| 5)) (and .cse2 .cse1) (not (<= 5 |old(~a16~0)|)) (and .cse2 .cse3))) [2020-07-20 11:32:46,586 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-20 11:32:46,586 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-20 11:32:46,586 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse0 (<= ~a17~0 0)) (.cse1 (<= ~a16~0 5)) (.cse2 (<= ~a8~0 13)) (.cse3 (<= ~a7~0 0))) (or (and .cse0 .cse1) (not (<= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (<= 15 ~a8~0) (and .cse2 .cse0) (and .cse3 .cse1) (not (<= |old(~a16~0)| 5)) (and .cse2 .cse1) (not (<= 5 |old(~a16~0)|)) (and .cse2 .cse3))) [2020-07-20 11:32:46,586 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-20 11:32:46,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:32:46 BoogieIcfgContainer [2020-07-20 11:32:46,606 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:32:46,608 INFO L168 Benchmark]: Toolchain (without parser) took 19548.88 ms. Allocated memory was 144.7 MB in the beginning and 528.0 MB in the end (delta: 383.3 MB). Free memory was 99.3 MB in the beginning and 411.4 MB in the end (delta: -312.1 MB). Peak memory consumption was 362.5 MB. Max. memory is 7.1 GB. [2020-07-20 11:32:46,609 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 11:32:46,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 712.33 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 98.9 MB in the beginning and 168.7 MB in the end (delta: -69.8 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:32:46,610 INFO L168 Benchmark]: Boogie Preprocessor took 112.84 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 163.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:32:46,611 INFO L168 Benchmark]: RCFGBuilder took 1214.71 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 163.8 MB in the beginning and 178.4 MB in the end (delta: -14.7 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:32:46,612 INFO L168 Benchmark]: TraceAbstraction took 17502.87 ms. Allocated memory was 237.0 MB in the beginning and 528.0 MB in the end (delta: 291.0 MB). Free memory was 177.0 MB in the beginning and 411.4 MB in the end (delta: -234.4 MB). Peak memory consumption was 347.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:32:46,616 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 144.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 712.33 ms. Allocated memory was 144.7 MB in the beginning and 204.5 MB in the end (delta: 59.8 MB). Free memory was 98.9 MB in the beginning and 168.7 MB in the end (delta: -69.8 MB). Peak memory consumption was 30.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.84 ms. Allocated memory is still 204.5 MB. Free memory was 168.7 MB in the beginning and 163.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1214.71 ms. Allocated memory was 204.5 MB in the beginning and 237.0 MB in the end (delta: 32.5 MB). Free memory was 163.8 MB in the beginning and 178.4 MB in the end (delta: -14.7 MB). Peak memory consumption was 81.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 17502.87 ms. Allocated memory was 237.0 MB in the beginning and 528.0 MB in the end (delta: 291.0 MB). Free memory was 177.0 MB in the beginning and 411.4 MB in the end (delta: -234.4 MB). Peak memory consumption was 347.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 488]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: (((((((((a17 <= 0 && a16 <= 5) || !(15 <= \old(a8))) || !(\old(a7) <= 0)) || 15 <= a8) || (a8 <= 13 && a17 <= 0)) || (a7 <= 0 && a16 <= 5)) || !(\old(a16) <= 5)) || (a8 <= 13 && a16 <= 5)) || !(5 <= \old(a16))) || (a8 <= 13 && a7 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.8s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 454 SDtfs, 2438 SDslu, 331 SDs, 0 SdLazy, 6851 SolverSat, 934 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2014 GetRequests, 1969 SyntacticMatches, 5 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6946occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 2531 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 174 PreInvPairs, 276 NumberOfFragments, 344 HoareAnnotationTreeSize, 174 FomulaSimplifications, 44399 FormulaSimplificationTreeSizeReduction, 1.3s HoareSimplificationTime, 7 FomulaSimplificationsInter, 13149 FormulaSimplificationTreeSizeReductionInter, 2.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1284 NumberOfCodeBlocks, 1284 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1983 ConstructedInterpolants, 0 QuantifiedInterpolants, 584153 SizeOfPredicates, 10 NumberOfNonLiveVariables, 3793 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 1116/1178 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...